Chamberlain procedure

A patient with an anterior mediastinal mass presented for a biopsy via an anterior mediastinotomy, or Chamberlain procedure. A 3 cm second interspace incision was made to the left of the sternal border. Dissection was taken down through the soft tissue, splitting the pectoral muscle and identifying the superior border of the third rib, through the intercostal muscle and into the second interspace, brushing the pleura aside and identifying the mass. A mediascope was then inserted through this incision and several biopsies were taken. What is the correct CPT code for the Chamberlain procedure? ...

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Note:  The following article synopsis was NOT provided by the AHA. It was created by Find-A-Code/innoviHealth.

Article Overview

This article explains the coding context for a Chamberlain procedure performed to biopsy an anterior mediastinal mass. It is useful for coders working in thoracic surgery, inpatient hospital coding, and CPT-based procedure reporting who need to understand the procedure type, the relevant CPT assignment, and the Medicare inpatient-only note.

Why This Topic Matters

Correctly identifying the procedure category affects procedure reporting and reimbursement, especially when Medicare inpatient-only status is involved. The article helps coders align the documented surgical approach with the appropriate CPT framework.

What You Will Learn

  • How the Chamberlain procedure is categorized for coding purposes
  • How the article frames CPT selection for an anterior mediastinotomy biopsy
  • Why Medicare inpatient-only status is relevant to this procedure type
  • How the documented surgical approach relates to thoracic procedure reporting

Who Should Read This

  • Medical coders
  • Coding auditors
  • Thoracic surgery billers
  • Hospital inpatient coding staff
  • Revenue cycle professionals

Codes Discussed


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